[sheepdog] [Qemu-devel] [PATCH] sheepdog: fix confused return values

[Markus Armbruster]

Liu Yuan <namei.unix at gmail.com> writes:

> On Wed, Feb 18, 2015 at 09:35:07AM +0100, Markus Armbruster wrote:
>> Liu Yuan <namei.unix at gmail.com> writes:
>> 
>> > From: Liu Yuan <liuyuan at cmss.chinamobile.com>
>> >
>> > These functions mix up -1 and -errno in return values and would might cause
>> > trouble error handling in the call chain.
>> >
>> > This patch let them return -errno and add some comments.
>> >
>> > Reported-by: Markus Armbruster <armbru at redhat.com>
>> > Signed-off-by: Liu Yuan <liuyuan at cmss.chinamobile.com>
>> 
>> Did you review all functions returning negative errno, or just the two
>> that caught my eye?
>
> Umm, mostly the two you mentioned.

I encourage you to review the whole file for this error pattern!  In my
experience, bugs occur in clusters.  When you find one, there's a high
chance similar ones exist, and looking for them is good practice.